Lamp or lantern



(No Mdel.) f

J. H. EWINGrl 8u AE. L. BILL.

..,LAMMReLANTBNp No. 261,915. Patented Aug. 1, 1882.

UNITED' STATES PATENT trice..

JOHN HQEWING AND EDWARD L. BILL, OF WHEELING, WEST-VIRGINIA.

LAMP OR yLANTERN.4

SPECIFICATION forming part of Letters Patent No. 261,915, dated August1, 1882.

Application filed June 23, 1882. (No modell To all whom it may concer/nBe it known that we, JOHN H. Ewnve and EDWARD L. BILL, of Wheeling, inthe county ot' Ohio and State of West Virginia, have invented certainnew and useful Improvements in Lamps or Lanterns; and we do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the' art to which itper'- tains to make and use the same.

Our invention relates to an improvement in globes, cylinders, chimneys,shades, and other articles of glass employed to shield the llames oflanterns and lamps, the object ofthe invention heilig to attach lensesto articles of the above description in suchmanner as to render themindependent of molecular changes in said articles and to concentrate andtransmit the maximum amount of light.

Further objects of our invention are lo provide means for coloring andfor entirely intercepting the luminous pencils emanating from lanterns,lamps, and other sources ot' light.

With these objects in view our invention consists in certain detail ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointed ont in the claims.

In the accompanying drawings, Figure 1 is a view in perspective of a.lantern-globe having a lens attached to it by devices constructed inaccordance with our invention. Fig. 2 is a view in verticalcross-section thereof. Fig. 3 is a View of one of the modified formswhich our invention may assume. Fig. et is a view showing one adaptationof our invention to coloring the transmitted light. Fig. 5 is a viewillustrating means for accomplishing the same result. Fig. 6 is a viewin vertical cross-section of a globe having a lens attached to it andprovided with a screen for interceptin g the light transmitted throughthe lens, and Fig. 7 is a'view containing a mcdication of the deviceshowu in Fig. 6. A

A represents a lantern-globe, provided with a circular aperture, B,formed in it during the process of its manufacture or after itscompletion.

Gis a lens of any desired and approved type, and of approximately thesame size as the aperture in the globe. The said lens is secured inposition in which it is interposed in the luminous pencils passingthrough said aperture by a metallic annulus, D, provided with a flange,E, adapted to engage with its periphery, and with an inwardly-projectingrim, F,

1 arranged to be outwardly deiiected, as shown in the drawings, toengage with those portions of the inner face of the globe which surroundthe aperture B.

Instead of constructing the annulus as described and deilecting the lipE after the introduction of the same into the aperture, the

annulus may be made in sections adapted to.

be secured together when brought in conjunction from opposite sides ofthe aperture. One form of sectional annulus is shown in Fig. 3 of thedrawings, wherein the tlangeE is shown t0 be connected with a ring, G,located within the globe, byV screws H. If desired, also, the parts ofthe annulus located within and without 'the globe may be adapted to bescrewed together. Again, rings substantially like the ring'G may besecured to the inner and outer faces of the globe by screws passingthrough the aperture and connecting them, a ilange adapted to inclose alens' being hinged t the outer of said rings. This construction isdesirable, in that the interior of the globe is rendered readilyaccessible, permitting the light to be attended with little trouble.

Lenses of white or of colored glass will be employed, according as it isdesired to transmit white or colored light. 1f colored light is thedesideratum, lenses of solid color may be used, or, preferably, Whitelenses flashed with ruby, emerald,.or other colored glass. The coloringof the transmitted light may also be effected by the use of plates ot'colored glass. One method of coloring the light in; this manner isillustrated in Fig. 4, wherein a disk, I, of colored glass, is used inlieu of the rim D of the annulus, said disk being attached to thelens-holdin g ilange E by rivets or screws J extending through theaperture in the globe. Another way of effecting the same result in adiierent mannen is illustrated in Fig. 5 ot' the drawings, whichshoWsaconcavo-convex plate, K, of colored glass, mounted in a metallicrim,

L, adapted to be secured to a 'lens-holding l a flange formed like theange M shown in Fig. 7 of the drawings.

Itis often desirable, especially in signaling, to entirely intercept theluminous pencils, and for this purpose we employ screens, forms of whichare shown in the last three figures of the drawings. The screen Oconsists ot' a concavoconvex plate of metal provided with a rim, P,adapted to be screwed over the modified lensholding flange M shown inFig. 6.of the drawings, said flange being provided with screwthreads Q.The rim R of the screen shown in Fig. 7 ofthedrawings is provided withspringarms T, adapted to be engaged with a suitable ledge, U, formed yonthe lens-holding flange N. If it is desired to have a screen permanently4secured to the outer face of the globe, a screen -integral with themare liable, owing to inequalities in the thickness of the glass, tocrack during those contractions and expansions consequent upon thechanges in temperature; but in globes having lenses attached to them inaccordance with our invention the molecular changes above alluded totake place so uniformly that this objection is entirely obviated. Again,by employing globes having apertures formed in them the lenses receivethe luminous pencils directly from the light, and none is lost by beingabsorbed by glass interposed between the lenses and light; and, linally,lenses molded independently possess much higher value as concentratorsof light than those made integral with globes in the process of theirmanufacture.

In view of the numerous modifications suggested we would have itunderstood that we hold ourselves at liberty to make such changes andalterations as fairly fall within the spirit and scope of our invention.

Having fully described our invention, what 5o we claim as new, anddesire to secure by Letters Patent, is-

1. The combination,with a globe or its equivalent having one or moreapertures formed in it, of lenses and devices attached to the globe andadapted to engage with the lenses and to interpose them in the luminouspencils passing through said apertures, substantially as set forth.

2. The combination,with a globe or its equivalent having one or moreapertures formed in it, of lenses and metallic annuli attached to theglobe and adapted to engage with the peripheries of the lenses and tointerpose them in the luminous pencils passing through the saidapertures, substantially as set forth.

3. The combination,with a globe or its equivalent having one or moreapertures formed in it, of lenses and metallic annuli located in saidapertures and provided with flanges to clasp the peripheries of thelenses, and with rims to engage with the inner faces of the globes,substantiallyas set forth.

4. The combination,with aglobe or its equivalent having one or moreapertures formed in it, of lenses, devices attached tothe globe andadapted to support said lenses in the luminous pencils passing throughthe apertures, and plates of colored glass arranged to colorV the lighttransmitted through the lenses, substantially as set forth.

5. The com bination,with a globe or its equivalent having one or moreapertures formed in it, of lenses, devices attached to the globe andadapted to support the lenses in the luminous pencils passing throughsaid apertures, and screens to intercept the light ytransmitted throughthe lenses, substantially as set forth.

In testimony whereof we have signed this specification in the presenceot' two subscrib- 9o ing witnesses.

JOHN HENRY EVVING. EDWARD L. BILL.

Witnesses:

J As. C. BAKER, WM. P. ADAMS.

